X0306 4 2019-02-01 1 0001477425 SendGrid, Inc. SEND 0001721790 Dholakia Sameer C/O SENDGRID, INC. 1801 CALIFORNIA STREET, SUITE 500 DENVER CO 80202 1 1 0 0 President and CEO Common Stock 2019-02-01 4 D 0 445590 0.00 D 0 D Employee Stock Option (Right to Buy) 1.83 2019-02-01 4 D 0 796328 0.00 D 2024-10-19 Common Stock 796328 0 D Employee Stock Option (Right to Buy) 12.00 2019-02-01 4 D 0 448144 0.00 D 2027-07-25 Common Stock 448144 0 D Includes 1,268 shares acquired under the SendGrid, Inc. 2017 Employee Stock Purchase Plan on January 18, 2019. Disposed of pursuant to the Agreement and Plan of Merger and Reorganization dated as of October 15, 2018, as amended on December 13, 2018 (the "Merger Agreement", and the transactions contemplated therein, the "Merger"), by and among the Issuer, Twilio Inc. ("Twilio") and Topaz Merger Subsidiary, Inc., whereby each share of Issuer common stock was canceled in exchange for 0.485 of a share of Twilio Class A Common Stock, with fractional shares being paid in cash. The option was assumed by Twilio in the Merger and replaced with an option to purchase 386,219 shares of Twilio Class A Common Stock with an exercise price of $3.77 per share. The option was fully vested at the effective time of the Merger. At the effective time of the Merger, the vesting of 25% of all unvested shares subject to the grant accelerated, with the remaining shares exercisable in equal monthly installments until fully vested on January 1, 2022. The option was assumed by Twilio in the Merger and replaced with an option to purchase 217,348 shares of Twilio Class A Common Stock with an exercise price of $24.74 per share. /s/ Matthew P. Dubofsky, Attorney-in-Fact 2019-02-01